EasyArticles frontend dashboard allows authorized users to manage user subscription. Here, possible operations include importing subscribers and unsubscribing them.
How to Mass Assign Subscribers
The subscriber importer can be accessed through Dashboard > Subscriptions > Import.
Create a CSV File containing your subscribers. This CSV file should only contain 2 columns; Name and Email. Here is the example of the CSV file.
Upload this CSV file and click on Upload CSV File and you're done.
You should see the subscribers get added to the subscription listing.